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朴喜斗 동국대학교 지역환경연구소 1988 地域環境 Vol.- No.6
The main purpose of this is to clarify the characteristics and the process of the depositional landform of Young-weol area by the survey of topographic map, the survey of geologicmap, gradation analysis, the survey of outcrops and petrographic comparison. The conclusions of this study are as follows; 1. The rounded rocks and the subrounded rocks which are scattered in the hollow of the doing and uvale on the each terrace are deposited by means of fluvial process. After the rock were deposited by the fluvial action, the karst hollow were formed by the solubility. 2. The meander streams(the stream directions) were influenced by the fault line in the Pyoung-Chang River and Seo River. Accordingly, these rivers are reflected by fracture guide factor. 3. The terraces which were developed beside both sides of the meander stream were formed by the different discharge of the climate fluctuation and the upheaval of the Taeback Mt. 4. I don't think that the forming period of the terrace is long as the change of glacial age. The timely gap of the terrace forming is short. 5. The weathering rinds of the rocks on the each terrace are small. These are the evidence that the upheaval of the Taeback Mt. is under way recently. 6. Putting these various studies together, after the base level of this studying area were served according to the upheaval of the Taeback Mt., the meander stream of the Ryoung_Chang River and the Seo River wound in a sinous course and the terraces beside both sides of the meander stream were formed with reflection of the climatic fluctuation and the upheaval of the Taeback Mt..
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朴喜斗 동국대학교 지역환경연구소 1987 地域環境 Vol.- No.5
The main purpose of this study is to clarify the characteristics and process of the depositional landform of Je-Cheon area by gradation analysis (seive any hydrometer analysis), observation of micro-topography survey of outcrops and petrographic comparison. The conclusion of this study are as follows: 1. In addition to the differential weathering between the granitic bedrock and granitic gneiss of mountain behind, I dare to think that the fracture-guided factors are important as morphogenetic process in this knickpoint. This problem should be farther studied from now on. 2. The rivers in this area braid on the weathered bedrocks. This area is formed by the cut and fill action of the braiding stream, that is, lateral action. 3. The gravels and their matrixes are deposited by means of fluvial process through the survey of outcrops and the analysis of deposits. 4. The depositional landforms of this area are divided into three sections, one is the floodplain on the same level of the present riverbed, another is the lower gentle slope (height 230-240m) where is higher than the present riverbed by 10 meters, and the last is the upper gentle slope (height 350-400m) where is deposited from the lower gentle slope to the knickpoint. The upper gentle slope and the lower gentle slope covered with the fluvial deposits of fluvial action, and afterward the former was influenced by mass movement. Even the parts of the latter is influenced by mass movement. 5. The change of the base level of erosion is reflected in the dissection and the enlargement through the upheaval of the Taebaek Mountains. 6. After the weathering of the bedrock, the formative periods in this area are as follows: After the granitic bedrock was weathered in the first place, the upper gentle slope was deposited, and then the lower gentle slope was deposited. In the Holocene the floodplain was and is being deposited along the streams.
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朴喜斗 西原大學校 基礎科學硏究所 2000 基礎科學硏究論叢 Vol.14 No.-
The purpose of this paper is to clarify variation of alluvial bedding and depositional environment in the lagoon Chongchoho of Sokcho and to make lagoon morphogenesis clear. Alluvial bedding is fluvial deposits in this lagoon. The average thickness of horizon is about 15m and horizons consist of 4-6 bedding. There was variation of depositional environment 4-6 times on these. There are residual soils on the weathered horizon of bedrock in the southwestern part of this lagoon and this parts have been land for a long time as much as pedogenesis. Round gravels were deposited on residual soils or on weathered bedrock. These gravels are never made by wave grinding and are made by Chongchocheon river. So subround are gravels. As you see the profiles from bottom to upper, the orders of horizons are round gravel →sand →silt or clay →sand or round gravel →organic clay →sand. Round gravel was deposited by river and silt or clay was deposited by sea water. veneered and narrowed sand or organic clay was deposited for a transgression period or for a regression period. What organic clay was mixed with dead shell and low or high plasticity proof this. Chongchoho lagoon was not formed by a cycle of transgression or regression and fromed by two cycle. Partially are one cycle effective. I have been concluded that this lagoon was formed at high sea level of 3,000 B.P. and 1,800 B.P. by comparison of other study.
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朴喜斗 西原大學校 基礎科學硏究所 1998 基礎科學硏究論叢 Vol.12 No.-
* This island was geologically formed by volcanism 7∼9 times.I found dislocation of faulting 2∼4m at Namyang. Thick pyroclastics were deposited between Albong basin and Mt. Sunginbong. * This island is oceanic climate and coldest month is over zero degree, summer season is cool. Annual amount of precipitation is 800∼1,600mm and precipitation change rate is high. Amount of deepest snow cover is 1∼2m,especially in Nari basin 3∼4m. Type of seasonal precipitation is September peak. It equally rains in a year but annual amount of precipitation is dependent on amount of snow cover. Main wind is northwest is Jan.-April and sourthernwest in May-August.Southern western south wind, east wind and south wind are next. * Lowest altitude is 250m in Nari basin and 470m in Albong basin but 530m at Albong summit. There are about 10 craters in Albong basin, this basin are divided into two blocks by magma from Albong crater.Alluvial fan are developed in south of Nari basin and Kongam are formed by cubic joint, agglomerates are much in this island. * Alluvial deposit size of bay region are different from those of headland region. Three step marine terraces are developed in Chusan, Chunbu and Hyunpo area. There are three step berm on the shingle beach by means of forming age. * There are four step wave-cut-platform which altitude are 20∼50m in Tonggumi one another and there are many weathering pits on those. * There are much tafoni by means of salt weathering in Taiha, Kaduryung, Judong area. * There are many plants from marine plants to high alpine plants in this island according to oceanic climate. There are many natural monument and rare plant. * There are 6 great soil groups and soil order are Entisols and Inceptisols and are almost young soil. * Man live on peculiar lives by means of physical characteristics; climate, geology, geo-morpholoy and soil etc.
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